<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>06 CSS的详细用法</title>
  <script src="../../Resource/外部库/jquery-3.2.1.js"></script>
  <script>
    $(document).ready(function () {
      $("li").css({
        "background":"red",
        "font-size":"28px",
        "color":"blue"

      })
    })
  </script>

</head>
<body>
<ul>
  <li>aa</li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
</ul>

</body>
</html>